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Heat shrink kit package from Back 40 Solar with tubes and metallic connectors for electrical wiring protection.

Back40 Crystal Clear Pump Cable Heat Shrink Waterproof Splice Kit

by RPS Water Pumps

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$9.99
$9.99 - $9.99
$9.99
$6.99
$6.99 - $6.99
$6.99

Rewiring your submersible well pump? This splice kit makes clean, watertight electrical splices easy for DIYers, well drillers, and pump installers. It’s the only clear splice kit on the market, so you can see every connection as you make it — and catch any future issues fast. The tubing rapidly shrinks around your wire and crimp, forming a permanent, flexible, waterproof barrier that protects deep underground connections for years. 

Well Pump Splice Kit Trusted by Pump Installers

Back40's crystal clear tubing gives pump installers, well servicemen, and DIYers unmatched visibility when connecting the well pump wire. Unlike traditional methods, you can actually see your butt connectors, confirm the quality of the splice, and ensure long-term security for underground systems where water flows and pressure fluctuates — especially in groundwater applications.

Compatible with 14, 12, and 10-gauge well pump wire, this kit also supports efficient cooling by creating a sealed, low-profile connection without bulking up the wire wall.

It's already included with every full RPS pump kit, but if you're buying a motor or pump end separately, this is a must-have accessory for a proper, lasting install.

Water-Tight Seal for Long-Term Protection

This premium kit uses heat-activated tubing and sturdy crimp connectors to create a permanent watertight seal. It’s perfect for submersible deep well installs and other water-tight applications. 

Inside each tube, a special thermoplastic adhesive melts as the tubing rapidly shrinks, locking out moisture and debris for years.

Whether you're redoing a submersible pump install or replacing an old splice, this splice kit makes it easy to confirm wire connections before sealing. It’s a trusted tool for rural farmers who want clean, reliable electrical splices that hold up underground.

Key Features

  • ONLY fully visible splice kit on the market
  • Compatible with 14, 12, and 10-gauge pump wire
  • Includes 5 clear shrink tubes + 5 wire crimps 
  • Provides a permanent waterproof electrical seal
  • Great add-on when buying motors or pump ends individually

Instructions

You'll need a heat source to properly shrink the tubing — a butane torch or lighter works great for this splice kit.

  1. Slide the heat-shrink tubing onto the water pump wires before crimping.
  2. Attach the provided connectors to the wires using a crimping tool.
  3. Center the tubing over the connector and begin heating from the middle outward.
  4. As the tube shrinks, the melted adhesive inside begins to flow and bond the connection.
  5. A permanent watertight seal is formed when the tubing fully conforms to the wire and connector.
Shipping, Returns and Warranty

Ultra Fast Shipping

We know how crucial getting water to your property is - that's why we offer FREE SHIPPING with every order over $100, which should arrive to your doorstep within 3-5 business days anywhere in the contiguous USA.

2-Year System Warranty:

Rural Power Systems Inc. (RPS Water Pumps) warrants to the owner for a period of twenty-four (24) months from the date of purchase (“Warranty Period”) such RPS Products will be free from material defects in material and workmanship. During the Warranty Period, RPS Water Pumps will repair or replace any defective part(s) at no cost to the owner. Learn More.

What does our Water Assurance Guarantee mean?

We offer a money back guarantee that our pump systems will provide you water when sized by one of our engineers to your well, desired setup and final total dynamic pumping head. We do require static water levels, drawdown and pressure requirements are accurately estimated during the sizing process, that installation follows the instructions of the RPS User Manual, and that you give RPS engineers a chance to troubleshoot any issues.

Returns

Customer shall inspect the RPS Product within 30 days of receipt and will be deemed to have accepted the RPS Product unless you notify RPS Water Pumps of your intent to return the product. You may return the RPS Products purchased, for any reason, for a full refund up to thirty (30) days after the date of purchase. The RPS Products must be unused, in new condition, and you must pay the return shipping or return to product to RPS Water Pumps in person. For your convenience, we are happy to email printable shipping labels and deduct the cost (often a discounted rate vs. retail store rate) from your refund amount.

After 30 days and up to sixty (60) days after purchase, a full refund is not available, but transferrable store credit is available for returned products. Unfortunately, we do not accept returns past 60 days and are unable to offer refunds, however, your product warranty is transferable in event the system is sold during the Warranty Period.

As a condition of this return policy, you agree to give us the opportunity to troubleshoot the issue(s) with the RPS Product to work out any issues prior to return.

Free Shipping on Orders $100+

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Our Pledges to You

  1. Be a company our Grandfathers would have trusted. The trend of ‘outsourcing’ customer support after the sale is a trend we wholeheartedly oppose. We are an American, family run company and our USA engineers support you before and after the sale.
  2. No sales pressure. Ever. Nobody in the company is paid on commission. We think this is important. Their role is to make sure they find the right pump for you and your well. If we don’t have a livestock solar pump that will suit your needs, we will help you find a solution elsewhere. Our job is to help get you water.
  3. Reliable Water. All manufactured products have occasional issues and we can’t claim to be perfect. However, we are proud of a near perfect track record in getting our customers water. This starts with selling a pump sized for your usage with our Water Assurance Plan and promptly addressing warranty issues to get you up and pumping again quickly.
  4. Give you the power! When you control your ability to pump water out of the ground, whether that is in the field or at home, it makes you more resilient and independent. We are here to help educate you about solar water pumping for livestock and our systems over the phone, with our manual - so you can install yourself. Take control of your water supply today.
  5. Fight for the American rancher. RPS is a David & Goliath story of a small American company fighting against a big European pump corporation that cares more about profits then the longevity of their pumps and the sky-high price for ranchers. Thanks to all our customers for the support of small business vs. foreign corporations trying to profit off some of the hardest working people in our great nation.

-The RPS Team

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